How far from a concave mirror must an object be placed?

In each case, you should demonstrate how you worked out your answer, as well as giving the answer. You must show your working to gain full marks. In each case, about 50% of the marks are awarded for a clear explanation of your working. a.

Goal posts at the ends of football fields are padded as a safety measure for players who might run into them. How does thick padding around the goal post reduce injuries to players?

The wavelength of some green light is 530.0 nm. what is the frequency of this green light?

How do you solve for b? A=1/2h (b+c)

A soccer player kicks a ball with a speed of 30 m/s at an angle of 10. How long does the ball stay in the air?

If a 0.200-kilogram ball sits on a shelf 2.00 meters from the floor, how much mechanical energy (me) does it possess?

Which statement describes static equilibrium? A. The forces on an object are unbalanced. B. An object has balanced forces acting on it and constant velocity. c. The forces on an object are balanced and there is no motion. D.

What is the rate at which work is done in lifting a 35 kg object vertically at a constant speed of 5 m/s? 1 1700 W 2 340 W 3 180 W 4 7.0 W

The owner of a window treatment company wants to design Shades that will cover the windows of the house.

What direction of magnetic field lines inside my magnet